write in printf       variable                       uses
  and scnaf command
=================================================================================================================

         %d             int                   to store any integer number upto 32000
         %ld            long int              to store any integer number more than 32000
         %.nf           float                 to store any number upto decimal point n
         %u             unsinged int          to store any positive integer number {not any negetive numbers}
         %c             char                  to store any chacter but not any string